EP0140333A3 - Sound reproducing system - Google Patents

Sound reproducing system Download PDF

Info

Publication number
EP0140333A3
EP0140333A3 EP84112794A EP84112794A EP0140333A3 EP 0140333 A3 EP0140333 A3 EP 0140333A3 EP 84112794 A EP84112794 A EP 84112794A EP 84112794 A EP84112794 A EP 84112794A EP 0140333 A3 EP0140333 A3 EP 0140333A3
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
volume
reproducing system
sound reproducing
sound reproduction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84112794A
Other languages
German (de)
French (fr)
Other versions
EP0140333A2 (en
Inventor
Michael Walker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel NV
International Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0140333A2 publication Critical patent/EP0140333A2/en
Publication of EP0140333A3 publication Critical patent/EP0140333A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level

Abstract

Entsprechend der Erfindung wird ein der Tonwieder­ gabe dienender Lautsprecher gleichzeitig zur Ermittlung des Umgebungsgeräusches verwendet. Hierzu werden Istspan­ nung und Sollspannung am Lautsprecher miteinander ver­ glichen. Die Differenz ist abhängig vom Schallereignis am Ort des Lautsprechers, durch das im Lautsprecher Mikropho­ niespannungen entstehen. According to the invention, one of the sounds is repeated speaker serving at the same time to determine the Ambient noise used. For this, actual span voltage and target voltage on the loudspeaker like. The difference depends on the sound event on Location of the loudspeaker through which the microphone in the loudspeaker tensions arise.

Mit einem erfindungsgemäßen Tonwiedergabesystem kann die Lautstärke und die Dynamik einer Tonwiedergabe automatisch an die Umgebungslautstärke angepaßt werden. Anwendung beispielsweise im Kraftfahrzeug. With a sound reproduction system according to the invention can control the volume and dynamics of sound reproduction can be automatically adjusted to the ambient volume. Application, for example in a motor vehicle.

EP84112794A 1983-10-28 1984-10-24 Sound reproducing system Withdrawn EP0140333A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3339108 1983-10-28
DE19833339108 DE3339108A1 (en) 1983-10-28 1983-10-28 SOUND PLAYING SYSTEM

Publications (2)

Publication Number Publication Date
EP0140333A2 EP0140333A2 (en) 1985-05-08
EP0140333A3 true EP0140333A3 (en) 1985-10-02

Family

ID=6212935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112794A Withdrawn EP0140333A3 (en) 1983-10-28 1984-10-24 Sound reproducing system

Country Status (5)

Country Link
EP (1) EP0140333A3 (en)
JP (1) JPS60111597A (en)
DE (1) DE3339108A1 (en)
DK (1) DK511784A (en)
ES (1) ES8604381A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836745A1 (en) * 1988-10-28 1990-05-03 Standard Elektrik Lorenz Ag METHOD AND DEVICE FOR LINEARIZING THE FREQUENCY GEAR OF A SPEAKER SYSTEM
DE19533260A1 (en) * 1995-09-08 1997-03-13 Siemens Ag Dynamic control of low frequency signals
US10741034B2 (en) 2006-05-19 2020-08-11 Apdn (B.V.I.) Inc. Security system and method of marking an inventory item and/or person in the vicinity
US9790538B2 (en) 2013-03-07 2017-10-17 Apdn (B.V.I.) Inc. Alkaline activation for immobilization of DNA taggants
US8940485B2 (en) 2008-11-12 2015-01-27 Apdn (B.V.I.) Inc. Methods for genotyping mature cotton fibers and textiles
US9297032B2 (en) 2012-10-10 2016-03-29 Apdn (B.V.I.) Inc. Use of perturbants to facilitate incorporation and recovery of taggants from polymerized coatings
US9266370B2 (en) 2012-10-10 2016-02-23 Apdn (B.V.I) Inc. DNA marking of previously undistinguished items for traceability
US9963740B2 (en) 2013-03-07 2018-05-08 APDN (B.V.I.), Inc. Method and device for marking articles
WO2015142990A1 (en) 2014-03-18 2015-09-24 Apdn (B.V.I.) Inc. Encryped optical markers for security applications
US10760182B2 (en) 2014-12-16 2020-09-01 Apdn (B.V.I.) Inc. Method and device for marking fibrous materials

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1278671A (en) * 1960-10-31 1961-12-15 Process intended to eliminate distortions by harmonics at the output of electronic amplifiers, and assembly for implementing this process
FR2199241A1 (en) * 1972-09-11 1974-04-05 Matsushita Electric Ind Co Ltd
FR2321811A1 (en) * 1975-08-19 1977-03-18 Vissiere Charles Correction circuit for electroacoustic transducer - has two differential amplifiers across transducer feeding error signal back to signal amplifier
DE2604939A1 (en) * 1976-02-09 1977-08-11 Ibm Deutschland METHOD OF MAKING SMALL THROUGH HOLES
DE2756943A1 (en) * 1977-12-21 1979-06-28 Ulrich F A Dipl Ing Fusban Automatic volume control for public address system - has microphone for each loudspeaker detecting background noise to change amplitude of wanted signal
JPS553261A (en) * 1978-06-22 1980-01-11 Clarion Co Ltd Automatic sound volume adjusting device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1278671A (en) * 1960-10-31 1961-12-15 Process intended to eliminate distortions by harmonics at the output of electronic amplifiers, and assembly for implementing this process
FR2199241A1 (en) * 1972-09-11 1974-04-05 Matsushita Electric Ind Co Ltd
FR2321811A1 (en) * 1975-08-19 1977-03-18 Vissiere Charles Correction circuit for electroacoustic transducer - has two differential amplifiers across transducer feeding error signal back to signal amplifier
DE2604939A1 (en) * 1976-02-09 1977-08-11 Ibm Deutschland METHOD OF MAKING SMALL THROUGH HOLES
DE2756943A1 (en) * 1977-12-21 1979-06-28 Ulrich F A Dipl Ing Fusban Automatic volume control for public address system - has microphone for each loudspeaker detecting background noise to change amplitude of wanted signal
JPS553261A (en) * 1978-06-22 1980-01-11 Clarion Co Ltd Automatic sound volume adjusting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 4, Nr. 28 (E-1)[510], 8 März 1980, Seite 150 E 1; & JP-A-55 003 261 (KURARION K.K.), 11.01.1980 *

Also Published As

Publication number Publication date
JPS60111597A (en) 1985-06-18
DK511784D0 (en) 1984-10-26
EP0140333A2 (en) 1985-05-08
ES537155A0 (en) 1985-12-16
DE3339108A1 (en) 1985-05-09
ES8604381A1 (en) 1985-12-16
DK511784A (en) 1985-04-29

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

PUAL Search report despatched

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RTI1 Title (correction)
AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19860603

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT

Owner name: ALCATEL N.V.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WALKER, MICHAEL